lasso-babel-transform

    3.0.1 • Public • Published

    lasso-babel-transform

    Lasso.js transform that uses Babel to transpile ES6 code to ES5.

    Prerequisites

    This transform requires Lasso v2+

    Installation

    lasso 2.x/3.x, babel 7.x, lasso-babel-transform 2.x

    npm install lasso-babel-transform @babel/core

    lasso 2.x/3.x, babel 6.x, lasso-babel-transform 1.x

    npm install lasso-babel-transform@1

    Usage

    By default, this plugin will look for a .babelrc while traversing up the root directory of the packages and will transpile any files that have the .js or .es6 extension. If a .babelrc file does not exist, it will attempt to look for a .babelrc-browser file. If neither of those files exist, this plugin will look in the package.json for a babel property.

    You can specify different file extensions with the extensions option in the transform's config (shown below).

    require('lasso').configure({
        require: {
            transforms: [
                {
                    transform: 'lasso-babel-transform',
                    config: {
                        extensions: ['.js', '.es6'] // Enabled file extensions. Default: ['.js', '.es6']
                    }
                }
            ]
        }
    });

    Global babel options

    Alternatively, babel options can be provided directly via the config. Note: Specifying babel options directly will cause all files to be transpiled with these options (regardless of what is specified in the package's .babelrc, .babelrc-browser, or babel property in the package.json).

    require('lasso').configure({
        require: {
            transforms: [
                {
                    transform: 'lasso-babel-transform',
                    config: {
                        // directly specify babel options
                        babelOptions: {
                            presets: [ "@babel/preset-env" ]
                        }
                    }
                }
            ]
        }
    });

    Configuring Babel

    You will want to put a .babelrc or .babelrc-browser file at the root of each package that has any JavaScript files that should be transpiled by Babel. For example:

    my-module/.babelrc:

    {
        "exclude": ["excluded/**"],
        "presets": [ "@babel/preset-env" ]
    }
    

    As mentioned above, you can also opt to use the babel property to the package.json.

    my-module/package.json:

    {
        "name": "my-module",
        ...
        "babel": {
            // babel config goes here
        }
    }
    

    You will need to install any Babel plugins enabled in your babel config. For example:

    npm install @babel/preset-env --save

    Install

    npm i lasso-babel-transform

    DownloadsWeekly Downloads

    254

    Version

    3.0.1

    License

    ISC

    Unpacked Size

    22.1 kB

    Total Files

    77

    Last publish

    Collaborators

    • avatar
    • avatar
    • avatar
    • avatar
    • avatar